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Search: id:A116998
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A116998 a(n) = smallest number having not less distinct prime factors than any predecessor, a(1) = 1. +0
1
1, 2, 3, 4, 5, 6, 10, 12, 14, 15, 18, 20, 21, 22, 24, 26, 28, 30, 42, 60, 66, 70, 78, 84, 90, 102, 105, 110, 114, 120, 126, 130, 132, 138, 140, 150, 154, 156, 165, 168, 170, 174, 180, 182, 186, 190, 195, 198, 204, 210, 330, 390, 420, 462, 510, 546, 570, 630, 660 (list; graph; listen)
OFFSET

1,2

COMMENT

A001221(a(n)) <= A001221(a(n+1));

A002110 is a subsequence.

CROSSREFS

Cf. A029744.

Sequence in context: A113325 A015853 A018642 this_sequence A018779 A018382 A018266

Adjacent sequences: A116995 A116996 A116997 this_sequence A116999 A117000 A117001

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller (reinhard.zumkeller(AT)lhsystems.com), Apr 03 2006

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Last modified August 29 17:54 EDT 2008. Contains 143238 sequences.


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